the one map one demo approach doesn't translate at all for quake2 apart from some maps .. mini marathons per unit tho? mmmmm also per unit the gameplay is varied so its not 2 boring
but its more of a thing i'd want than someone would want to watch, unless my talent picked up
anyways, i must admit that quake2 sp is not fit for speedrunning indeed, well except a few small maps that can be done fast.
Thus speaketh the ignoramus.
If you think that Quake2 is not suitable for speedrunning, you have either never played it. Or you are stupid. Or both.
Quake2 has just about equal potential for running, depending on the map design of course (and some Q2 mappers may make more complex maps that is true. But some don't). Exactly the same principles as Quake speedrunning can be applied and the tricks are almost as good (and there's double jumping of course...and other subtler tricks).